Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Immobilizer Components And Replacement Guide
2024 Dodge and Ram 1500 TRXSECTION Immobilizer Components And Replacement Guide
| Component: |
|---|
| Body Control Module (BCM) |
| Radio Frequency Hub (RFH) Module |
| Powertrain Control Module (PCM) |
| Electronic Steering Lock (ESL) Module |
| Electronic Control Unit (ECU) |
| Priority | Procedure Name | BCM | PCM | FOBIKs | RFH |
|---|---|---|---|---|---|
| 1 | Vehicle Reconfiguration | X | |||
| 2 | RFH Module Replace | X | |||
| 3 | Program Ignition FOBIKs | X | |||
| 4 | BCM Immobilizer Replace | X | |||
| 5 | Immobilizer ECUs Replaced | X | |||
| 6 | ECU Specific Procedures | X | X | X |
Example Scenario: If a user has replaced both the PCM and BCM, the table indicates the routines should be ran in the following order:
- Vehicle Reconfiguration
- BCM Immobilizer Replace
- Immobilizer ECUs Replaced
- ECU Specific Procedures
All procedure names in the table are how they will appear in the diagnostic scan tool.
NOTE:
If the BCM does not program, disconnect the battery, wait 15 seconds, reconnect the battery and run the BCM immobilizer replace routine again.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.